[NSXv]: Add conf param for exclusive router edge size

Allows user to specify default exclusive_router_appliance_size in
nsx.ini file. If --router-size isn't specified in neutron router-create CLI
command; exclusive_router_appliance_size will be picked up

DocImpact

Change-Id: I010bfdb8c5807bb933085f049326082c8b5782dc

devstack/lib/vmware_nsx_v

@@ -102,6 +102,7 @@ function neutron_plugin_configure_service {
     _nsxv_ini_set nova_metadata_ips "$NSXV_NOVA_METADATA_IPS"
     _nsxv_ini_set metadata_shared_secret "$NSXV_METADATA_SHARED_SECRET"
     _nsxv_ini_set edge_ha "$NSXV_EDGE_HA"
+    _nsxv_ini_set exclusive_router_appliance_size "$NSXV_EXCLUSIVE_ROUTER_APPLIANCE_SIZE"
 }
 
 function neutron_plugin_setup_interface_driver {

etc/nsx.ini

@@ -143,6 +143,13 @@
 
 # (Optional) Deploys NSX Edges in HA mode
 # edge_ha = False
+
+# (Optional) Edge appliance size to be used for creating exclusive router.
+# Valid values: ['compact', 'large', 'xlarge', 'quadlarge']
+# This exclusive_router_appliance_size will be picked up if --router-size
+# parameter is not specified while doing neutron router-create
+# exclusive_router_appliance_size = compact
+
 # (ListOpt) Ordered list of router_types to allocate as tenant routers.
 # It limits the router types that the Nsxv can support for tenants:
 # distributed: router is supported by distributed edge at the backend.

vmware_nsx/common/config.py

@@ -324,7 +324,14 @@ nsxv_opts = [
                        "initialize the metadata infrastructure")),
     cfg.BoolOpt('edge_ha',
                 default=False,
-                help=_("Enable HA for NSX Edges"))
+                help=_("Enable HA for NSX Edges")),
+    cfg.StrOpt('exclusive_router_appliance_size',
+               default="compact",
+               help=_("Edge appliance size to be used for creating exclusive "
+                      "router. Valid values: ['compact', 'large', 'xlarge', "
+                      "'quadlarge']. This edge_appliance_size will be picked "
+                      "up if --router-size parameter is not specified while "
+                      "doing neutron router-create")),
 ]
 
 # Register the configuration options

vmware_nsx/extensions/routersize.py

@@ -17,11 +17,11 @@ from neutron.api.v2 import attributes
 
 
 ROUTER_SIZE = 'router_size'
+VALID_EDGE_SIZES = ['compact', 'large', 'xlarge', 'quadlarge']
 EXTENDED_ATTRIBUTES_2_0 = {
     'routers': {
         ROUTER_SIZE: {'allow_post': True, 'allow_put': False,
-                      'validate': {'type:values': ['compact', 'large',
-                                                   'xlarge', 'quadlarge']},
+                      'validate': {'type:values': VALID_EDGE_SIZES},
                       'default': attributes.ATTR_NOT_SPECIFIED,
                       'is_visible': True},
     }

vmware_nsx/plugins/nsx_v/plugin.py

@@ -80,6 +80,7 @@ from vmware_nsx.plugins.nsx_v.vshield import vcns_driver
 LOG = logging.getLogger(__name__)
 PORTGROUP_PREFIX = 'dvportgroup'
 ROUTER_SIZE = routersize.ROUTER_SIZE
+VALID_EDGE_SIZES = routersize.VALID_EDGE_SIZES
 
 
 class NsxVPluginV2(agents_db.AgentDbMixin,
@@ -1366,7 +1367,16 @@ class NsxVPluginV2(agents_db.AgentDbMixin,
                 raise n_exc.BadRequest(resource="router", msg=msg)
         elif r.get(ROUTER_SIZE) == attr.ATTR_NOT_SPECIFIED:
             if r.get('router_type') == nsxv_constants.EXCLUSIVE:
-                r[ROUTER_SIZE] = nsxv_constants.COMPACT
+                appliance_size = cfg.CONF.nsxv.exclusive_router_appliance_size
+                if appliance_size not in VALID_EDGE_SIZES:
+                    msg = (_("Invalid edge size specified in nsx.ini file. "
+                             "Specified value: %(specified)s; "
+                             "Valid values: %(valid)s") %
+                           {'specified': appliance_size,
+                            'valid': VALID_EDGE_SIZES})
+                    raise n_exc.BadRequest(resource="router", msg=msg)
+                else:
+                    r[ROUTER_SIZE] = appliance_size
 
     def create_router(self, context, router, allow_metadata=True):
         self._validate_router_size(router)

vmware_nsx/tests/unit/nsx_v/test_plugin.py

@@ -1850,6 +1850,30 @@ class TestExclusiveRouterTestCase(L3NatTest, L3NatTestCaseBase,
             router = self.deserialize(self.fmt, res)
             self.assertEqual(size, router['router']['router_size'])
 
+    def test_router_create_overriding_default_edge_size(self):
+        data = {'router': {
+                    'tenant_id': 'whatever',
+                    'name': 'test_router',
+                    'router_type': 'exclusive'}}
+        cfg.CONF.set_override('exclusive_router_appliance_size',
+                              'xlarge', group='nsxv')
+        router_req = self.new_create_request('routers', data, self.fmt)
+        res = router_req.get_response(self.ext_api)
+        router = self.deserialize(self.fmt, res)
+        self.assertEqual('xlarge', router['router']['router_size'])
+
+    def test_router_create_fails_when_bad_edge_size_specified(self):
+        data = {'router': {
+                    'tenant_id': 'whatever',
+                    'name': 'test_router',
+                    'router_type': 'exclusive'}}
+        cfg.CONF.set_override('exclusive_router_appliance_size',
+                              'foobar', group='nsxv')
+        router_req = self.new_create_request('routers', data, self.fmt)
+        res = router_req.get_response(self.ext_api)
+        router = self.deserialize(self.fmt, res)
+        self.assertEqual("BadRequest", router['NeutronError']['type'])
+
     def test_router_add_gateway_invalid_network_returns_404(self):
         # NOTE(salv-orlando): This unit test has been overriden
         # as the nsx plugin support the ext_gw_mode extension